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12286160 = 2451959137
BaseRepresentation
bin101110110111…
…100011010000
3212010012102222
4232313203100
511121124120
61115200212
7206300465
oct56674320
925105388
1012286160
116a31857
124146068
132712323
1418bb66c
15112a525
hexbb78d0

12286160 has 80 divisors (see below), whose sum is σ = 30801600. Its totient is φ = 4543488.

The previous prime is 12286147. The next prime is 12286171. The reversal of 12286160 is 6168221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89612 + ... + 89748.

It is an arithmetic number, because the mean of its divisors is an integer number (385020).

Almost surely, 212286160 is an apocalyptic number.

12286160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12286160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15400800).

12286160 is an abundant number, since it is smaller than the sum of its proper divisors (18515440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12286160 is a wasteful number, since it uses less digits than its factorization.

12286160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12286160 is about 3505.1619078154. The cubic root of 12286160 is about 230.7484127089.

The spelling of 12286160 in words is "twelve million, two hundred eighty-six thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 19 20 38 40 59 76 80 95 118 137 152 190 236 274 295 304 380 472 548 590 685 760 944 1096 1121 1180 1370 1520 2192 2242 2360 2603 2740 4484 4720 5206 5480 5605 8083 8968 10412 10960 11210 13015 16166 17936 20824 22420 26030 32332 40415 41648 44840 52060 64664 80830 89680 104120 129328 153577 161660 208240 307154 323320 614308 646640 767885 1228616 1535770 2457232 3071540 6143080 12286160